:root {
    --primary: #ffffff;
    --primary-dark: #e0e0e0;
    --secondary: #333333;
    --text: #ffffff;
    --background: #000000;
    --card-bg: #111111;
    --success: #ffffff;
    --error: #ff4b4b;
    --border-color: rgba(255, 255, 255, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: all 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.5;
    padding: 16px;
    background: var(--background);
    color: var(--text);
    min-height: 100vh;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

h1 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--text);
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding: 0.25rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.tab-btn {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: transparent;
    color: var(--text);
    cursor: pointer;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.875rem;
}

.tab-btn.active {
    background: var(--secondary);
}

.tab-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.05);
}

.tab-content {
    display: none;
    animation: fadeIn 0.2s ease;
}

.tab-content.active {
    display: block;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
    color: var(--text);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.875rem;
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
}

input[type="checkbox"] {
    appearance: none;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
}

input[type="checkbox"]:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

input[type="checkbox"]:checked::after {
    content: "✓";
    position: absolute;
    color: var(--background);
    font-size: 12px;
    left: 2px;
    top: -2px;
}

textarea {
    resize: vertical;
    min-height: 100px;
}

button {
    background: var(--secondary);
    color: white;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

button:hover {
    background: #444444;
}

button:active {
    transform: translateY(1px);
}

.result {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

#generatedLink {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    word-break: break-all;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.8125rem;
    border: 1px solid var(--border-color);
}

.env-var {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    align-items: center;
}

.env-var input {
    flex: 1;
}

.env-var button {
    padding: 0.75rem;
    min-width: 40px;
    background: #333333;
}

#addEnvVar {
    width: 100%;
    margin-top: 0.75rem;
    background: #333333;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: #444444;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555555;
}

/* Focus styles */
*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    button {
        width: 100%;
    }
}